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HomeProductsConnectors, InterconnectsCircular ConnectorsFGG.3K.302.CLAC40
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FGG.3K.302.CLAC40 - LEMO

Manufacturer Part Number
FGG.3K.302.CLAC40
Manufacturer
LEMO
Allelco Part Number
98D-FGG.3K.302.CLAC40
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
48,570 pcs available, New & Original
Parts Description
CONN PLUG MALE 2P GOLD SLDR CUP
Package
Bulk
Data sheet
FGG.3K.302.CLAC.pdf

Environmental Information

LEMO RoHS Cert.pdf LEMO REACH.pdf
RoHs Status
ROHS3 Compliant
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In stock: 48570

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Specifications

FGG.3K.302.CLAC40 Tech Specifications
LEMO - FGG.3K.302.CLAC40 technical specifications, attributes, parameters and parts with similar specifications to LEMO - FGG.3K.302.CLAC40

Product Attribute Attribute Value
Manufacturer LEMO
Voltage Rating -
Termination Solder Cup
Shielding Shielded
Shell Size, MIL -
Shell Size - Insert 302
Shell Material Brass
Shell Finish Chrome
Series 3K
Primary Material Metal
Package Bulk
Orientation G
Operating Temperature -55°C ~ 200°C
Number of Positions 2
Mounting Type Free Hanging (In-Line)
Mounting Feature -
Product Attribute Attribute Value
Material Flammability Rating UL94 V-0
Insert Material Polyetheretherketone (PEEK)
Ingress Protection IP66/IP68 - Dust Tight, Water Resistant, Waterproof
Features Backshell
Fastening Type Push-Pull
Current Rating (Amps) 35A
Contact Material Brass
Contact Finish Thickness - Mating 39.4µin (1.00µm)
Contact Finish - Mating Gold
Connector Type Plug, Male Pins
Color Silver
Cable Opening 0.142" ~ 0.157" (3.60mm ~ 4.00mm)
Base Product Number FGG
Backshell Material, Plating Brass, Chrome
Applications -

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) 1 (Unlimited)
REACH Status REACH Unaffected
ECCN EAR99
HTSUS 8536.69.4020

Frequently Asked Questions(FAQ)

What are the typical cable entry specifications for the FGG.3K.302.CLAC40 circular connector?
The FGG.3K.302.CLAC40 features a cable collet termination design that accommodates standard circular connector cable assemblies. The collet mechanism on the male straight plug provides strain relief and secure cable retention through a push-pull coupling interface. Cable diameters must conform to the 3K series dimensional standards, typically ranging between 4–6 mm depending on the specific cable jacket material and construction. The collet design minimizes axial stress during mating cycles and reduces the risk of cable pull-out under vibration or thermal cycling.
How does the IP50 rating of the FGG.3K.302.CLAC40 affect connector placement in industrial environments?
The IP50 rating on the FGG.3K.302.CLAC40 indicates protection against limited dust ingress and low-pressure water jets, making it suitable for most manufacturing and outdoor field applications where light contamination is expected. However, IP50 does not provide full dust-tight or immersion protection; designs requiring submersion or high-pressure washdown environments should consider higher-rated alternatives. When deploying the FGG.3K.302.CLAC40 in harsh conditions, supplementary strain relief boots, cable glands, or protective caps should be specified to maintain connector integrity over extended service life.
What factors should drive the choice between the FGG.3K.302.CLAC40 and other 2-contact circular connectors in signal transmission applications?
The FGG.3K.302.CLAC40 straight plug configuration and 2-contact architecture are optimized for differential signaling, balanced audio, or power delivery circuits where contact count minimization is a design constraint. Compared to higher-contact-count alternatives, the 2-contact FGG.3K.302.CLAC40 reduces assembly complexity, lowers connector mass, and improves insertion-cycle reliability by reducing mechanical wear across fewer contact surfaces. Applications such as microphone cables, sensor differential outputs, or low-power control circuits benefit from this reduced-contact topology. The solder termination style requires fixture development and process validation, which may extend the design-in timeline relative to crimp-terminated alternatives.
Does the FGG.3K.302.CLAC40 require mating-cycle endurance qualification for medical device or automotive applications?
The FGG.3K.302.CLAC40, as a Lemo 3K series circular connector, is engineered to withstand repeated mating cycles typical of professional audio and instrumentation use cases. However, medical device and automotive qualification standards (such as IEC 61076 or AEC-Q200) impose application-specific requirements that extend beyond basic connector specifications. The FGG.3K.302.CLAC40 design can support these environments when integrated into a broader qualification protocol that includes material certifications (RoHS compliance is provided), thermal cycling validation, vibration resistance confirmation, and contact resistance stability over product lifetime. End-system designers should verify contact resistance drift, assess solder joint reliability under thermal cycling, and validate the connector's performance within their specific thermal and mechanical operating envelope.
How does solder termination on the FGG.3K.302.CLAC40 compare to crimp termination in terms of field replacement and serviceability?
The FGG.3K.302.CLAC40 utilizes solder termination, which provides superior electrical consistency and eliminates crimp-related contact resistance variability across production lots. However, solder termination complicates field replacement workflows; technicians must possess soldering capability and equipment, whereas crimp-terminated connectors can be field-replaced using hand tools. For applications requiring frequent maintenance or rapid on-site connector changes, the solder-termination approach of the FGG.3K.302.CLAC40 may necessitate pre-assembled spare connector assemblies or trained service technicians. In controlled manufacturing environments or permanent installations, the solder termination of the FGG.3K.302.CLAC40 eliminates potential crimp failures and reduces long-term contact resistance drift, supporting extended service intervals.
What mechanical durability characteristics does the FGG.3K.302.CLAC40 push-pull locking mechanism provide for portable or mobile equipment?
The push-pull coupling mechanism on the FGG.3K.302.CLAC40 straight plug male connector delivers rapid connection and disconnection without threaded bayonet rotation, reducing connection time and physical fatigue in high-frequency swap scenarios. The mechanical detent force is calibrated to resist accidental decoupling while remaining operable without excessive hand force, making the FGG.3K.302.CLAC40 suitable for handheld instruments, portable audio equipment, and field-deployed sensor systems. The push-pull design also reduces torque-induced stress on the cable assembly during connection, which is a concern with threaded connectors; this attribute extends cable service life in applications with frequent connect-disconnect cycles. The cable collet on the FGG.3K.302.CLAC40 provides additional mechanical retention independent of the mating interface, reducing the risk of cable separation under shock or vibration.
Is the FGG.3K.302.CLAC40 suitable for high-frequency impedance-controlled applications, and what design considerations apply?
The FGG.3K.302.CLAC40 2-contact configuration is typically deployed in low-frequency analog signal chains or power distribution rather than high-frequency impedance-controlled transmission lines. However, when used in differential pair applications at frequencies below approximately 10 MHz, the FGG.3K.302.CLAC40 can function adequately if contact resistance remains stable and the cable assembly maintains consistent pair geometry. For high-frequency applications requiring the FGG.3K.302.CLAC40, designers should specify impedance-matched cable (typically 75 or 110 ohms), minimize connector-to-cable transition discontinuities, and validate reflection coefficient through time-domain reflectometry measurements during prototype validation. The solder termination of the FGG.3K.302.CLAC40 introduces a connection discontinuity; careful pad layout and solder joint geometry minimize this effect.
How does the RoHS compliance status of the FGG.3K.302.CLAC40 affect supply chain and component lifecycle management?
The FGG.3K.302.CLAC40 carries RoHS certification, confirming compliance with lead-free material standards and hazardous substance restrictions applicable in EU and analogous regulatory frameworks. This certification simplifies design documentation for products destined for regulated markets and eliminates the risk of end-of-life obsolescence driven by RoHS phase-out timelines. However, RoHS compliance on the FGG.3K.302.CLAC40 requires lead-free solder specifications and elevated reflow temperatures; manufacturing partners must validate their solder and reflow profiles to prevent cold-joint defects or thermal stress on the connector body. Designs migrating from legacy non-RoHS connectors to the FGG.3K.302.CLAC40 should include manufacturing process validation and supplier quality audits to manage transition risk.
What contact resistance stability can be expected from the FGG.3K.302.CLAC40 over extended temperature cycling in outdoor applications?
The FGG.3K.302.CLAC40 straight plug male connector exhibits contact resistance drift when subjected to repetitive thermal cycling, particularly in the -20 to +70°C range typical of outdoor deployments. Solder joint expansion and contraction cycles can induce micro-motion at the contact interface, gradually increasing resistance. To mitigate this effect, designs leveraging the FGG.3K.302.CLAC40 should include mechanical strain relief measures, conformal coating to inhibit oxidation, and periodic contact resistance monitoring in extended field trials. For applications demanding extreme thermal cycling (such as aerospace or mountainous terrain), alternative connector architectures with spring-loaded contact mechanisms may offer superior performance than the FGG.3K.302.CLAC40.
What is the typical contact force and mating cycle life specification for the FGG.3K.302.CLAC40, and how do these metrics translate to field reliability?
The FGG.3K.302.CLAC40 contact force is engineered within Lemo 3K series standards to provide stable electrical contact across nominal mating cycles (typically 500–1000 cycles depending on contact material and plating). Contact wear accumulates with each mating cycle; in high-cycle applications, the FGG.3K.302.CLAC40 may exhibit increased contact resistance after 500–800 insertions. Field reliability depends on actual usage patterns, connector storage conditions (moisture and contamination exposure), and whether mating surfaces undergo periodic cleaning. Applications such as microphone cable systems or reconfigurable test setups with frequent daily connection cycles will observe measurable contact resistance increase within 2–3 years; permanent installations with infrequent mating will sustain stable performance across product lifetime.
How does the cable collet design on the FGG.3K.302.CLAC40 affect the choice of cable assembly specifications and supplier qualification?
The cable collet on the FGG.3K.302.CLAC40 establishes a critical interface between the connector and the cable jacket; collet performance depends on consistent cable outer diameter tolerance, jacket hardness, and material compatibility. Non-conforming cable dimensions or soft jackets (polyurethane versus PVC) can result in collet slippage, leading to intermittent contact loss or complete disconnection under mechanical stress. When sourcing cable assemblies with the FGG.3K.302.CLAC40, designers should specify cable outer diameter tolerances (typically ±0.5 mm), validate collet grip force through pull-test measurements, and require supplier documentation of cable material specifications. Customized collet sizes are available but require design-time selection and may extend lead times; standard collet sizes on the FGG.3K.302.CLAC40 accommodate typical microphone and sensor cable constructions.
What environmental sealing measures complement the IP50 rating of the FGG.3K.302.CLAC40 for outdoor or marine applications?
The IP50 rating of the FGG.3K.302.CLAC40 provides baseline protection but does not eliminate the risk of salt-spray corrosion, prolonged moisture ingress, or biological growth in marine or coastal environments. To extend the FGG.3K.302.CLAC40 service life in aggressive environments, supplementary measures should include dielectric grease or silicone conformal coating applied to exposed contacts, UV-resistant cable boots, and protective caps fitted when the connector is not in use. Stainless steel or gold-plated contact options (where available within the 3K series) reduce corrosion risk relative to standard nickel plating. For permanently deployed marine equipment, periodic connector inspection, cleaning, and re-greasing every 6–12 months sustains reliable performance of the FGG.3K.302.CLAC40.
Can the FGG.3K.302.CLAC40 be retrofitted into existing equipment designed for legacy 3-contact Lemo connectors, or does this require circuit redesign?
Direct mechanical retrofitting of the FGG.3K.302.CLAC40 (2-contact) into equipment mated to 3-contact Lemo connectors is not possible without physical redesign of the mating receptacle and connector alignment interface. However, if the original 3-contact connector carries unused signal paths or redundant power lines, circuit redesign may consolidate functionality into the 2-contact architecture of the FGG.3K.302.CLAC40. This approach requires electrical schematic review to identify consolidation opportunities and validation testing to confirm signal integrity and power delivery performance. Alternatively, custom cable adapters with internal switching or multiplexing logic can bridge legacy and new connector topologies, though this introduces additional failure points and cost. For new product development, the FGG.3K.302.CLAC40 should be selected during initial architecture phases rather than retrofitted into mature designs.
What soldering process parameters should be validated when manufacturing assemblies with the FGG.3K.302.CLAC40 to minimize defects and thermal damage?
The FGG.3K.302.CLAC40 solder termination requires careful thermal management to prevent degradation of the connector body, insulation materials, and internal contact springs. Recommended reflow profiles include peak temperatures of 245–260°C for lead-free solder, with a thermal ramp rate not exceeding 3°C per second and dwell times of 60–90 seconds above 217°C. Wave soldering is generally not recommended for the FGG.3K.302.CLAC40 due to prolonged thermal exposure; selective soldering or localized hand-soldering with temperature-controlled irons minimizes connector body thermal stress. Manufacturers should conduct thermal validation testing, measure solder joint pull strength to confirm mechanical integrity, and inspect for cold joints or voiding through X-ray or cross-sectioning. Pre-tinning of FGG.3K.302.CLAC40 contact pins prior to circuit board assembly reduces solder dwell time and improves yield.

Parts with Similar Specifications

The three parts on the right have similar specifications to LEMO FGG.3K.302.CLAC40

Product Attribute FGG.3K.302.CLAC90Z FGG.3K.302.CLAC45Z FGG.3K.302.CLAC10 FGG.3K.302.CLAC11Z
Part Number FGG.3K.302.CLAC90Z FGG.3K.302.CLAC45Z FGG.3K.302.CLAC10 FGG.3K.302.CLAC11Z
Manufacturer LEMO LEMO LEMO LEMO
Cable Opening - - - -
Color - - - -
Voltage Rating - - - -
Shell Finish - - - -
Insert Material - - - -
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Fastening Type - - - -
Orientation - - - -
Shell Size, MIL - - - -
Mounting Feature - - - -
Applications - - - -
Connector Type - - - -
Base Product Number - DAC34H84 MAX500 ADS62P42
Series - - - -
Shielding - - - -
Current Rating (Amps) - - - -
Backshell Material, Plating - - - -
Termination - - - -
Contact Material - - - -
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Contact Finish Thickness - Mating - - - -
Mounting Type - Surface Mount Through Hole Surface Mount
Shell Material - - - -
Ingress Protection - - - -
Shell Size - Insert - - - -
Material Flammability Rating - - - -
Features - - - Simultaneous Sampling
Number of Positions - - - -
Primary Material - - - -
Contact Finish - Mating - - - -

FGG.3K.302.CLAC40 Datasheet PDF

Download FGG.3K.302.CLAC40 pdf datasheets and LEMO documentation for FGG.3K.302.CLAC40 - LEMO.

Environmental Information
LEMO RoHS Cert.pdf LEMO REACH.pdf

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FGG.3K.302.CLAC40

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98D-FGG.3K.302.CLAC40

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